Hi! Does anyone know how to add trace headers (like Received:) in a protocol event sink (OnSmtpInCommand)? The sink is checking SPF and I need to add a Received-SPF: header at the top of the message. My header should not replace any other Received-SPF: headers already there and it need to be at the top of the message. My sink triggers on the RCPT TO command and I tried to write data into the pMsg object, but it didn't stay there. I guess Exchange cleared it during the DATA transaction. Any pointers are appreciated. /Johan
